WO1996023239A3 - Gaines intermediaires en copolymere de polypropylene-polyethylene pour cables a fibres optiques et leur procede de fabrication - Google Patents

Gaines intermediaires en copolymere de polypropylene-polyethylene pour cables a fibres optiques et leur procede de fabrication Download PDF

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Publication number
WO1996023239A3
WO1996023239A3 PCT/US1996/000974 US9600974W WO9623239A3 WO 1996023239 A3 WO1996023239 A3 WO 1996023239A3 US 9600974 W US9600974 W US 9600974W WO 9623239 A3 WO9623239 A3 WO 9623239A3
Authority
WO
WIPO (PCT)
Prior art keywords
buffer tube
polypropylene
gel
polyethylene copolymer
polyethylene
Prior art date
Application number
PCT/US1996/000974
Other languages
English (en)
Other versions
WO1996023239A2 (fr
Inventor
Hou-Ching M Yang
James D Holder
Christopher W Mcnutt
Original Assignee
Alcatel Na Cable Syst
Yang Hou Ching M
James D Holder
Christopher W Mcnutt
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=23488828&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO1996023239(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Alcatel Na Cable Syst, Yang Hou Ching M, James D Holder, Christopher W Mcnutt filed Critical Alcatel Na Cable Syst
Priority to US08/716,445 priority Critical patent/US5761362A/en
Priority to DE69614951T priority patent/DE69614951T2/de
Priority to EP96911186A priority patent/EP0760108B9/fr
Publication of WO1996023239A2 publication Critical patent/WO1996023239A2/fr
Publication of WO1996023239A3 publication Critical patent/WO1996023239A3/fr

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4429—Means specially adapted for strengthening or protecting the cables
    • G02B6/44384—Means specially adapted for strengthening or protecting the cables the means comprising water blocking or hydrophobic materials
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/441—Optical cables built up from sub-bundles
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4429—Means specially adapted for strengthening or protecting the cables
    • G02B6/443—Protective covering
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4429—Means specially adapted for strengthening or protecting the cables
    • G02B6/443—Protective covering
    • G02B6/4432—Protective covering with fibre reinforcements
    • G02B6/4433—Double reinforcement laying in straight line with optical transmission element
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4479—Manufacturing methods of optical cables
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4479—Manufacturing methods of optical cables
    • G02B6/4484—Manufacturing methods of optical cables with desired surplus length between fibres and protection features

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Insulated Conductors (AREA)

Abstract

Une gaine intermédiaire pour câbles à fibres optiques est fabriquée en une résine copolymère de polypropylène-polyéthylène dans laquelle sont répartis des agents nucléants et des charges qui améliorent la résistance à la compression-tension et les propriétés de dilatation thermique de la gaine intermédiaire selon l'invention (32). L'invention concerne également un câble non armé pourvu de cette gaine intermédiaire et désignée dans les dessins par (30). Le câble comprend une seule gaine intermédiaire (32) de grande dimensions remplie de gel et constituée d'un copolymère de polypropylène-polyéthylène avec au moins un agent nucléant incorporé. Le gel que contient la gaine intermédiaire est un gel thixotrope susceptible d'être bloqué par l'eau. La gaine intermédiaire (32) remplie de gel contient une pluralité de fibres optiques (34). Des fils (36) en aramide, polyéthylène, polyester ou fibres de verre de renforcement de la gaine dans le sens radial, sont enroulés en contre-hélice autour de la gaine intermédiaire (32) et sont imprégnés de composés de remplissage, tel qu'un composé de remplissaage à chaud à base de pétrole. Deux éléments (38) métalliques ou diélectriques de renforcement sont situés à 180° de distance l'un de l'autre sur la face extérieure des fils de renforcement radial (36). Une cordelette de déchirure de haute résistance (40) est fixée sur les fils de renforcement radial (36) pour aider à enlever l'enveloppe du câble. Une chemise extérieure (42) en polyéthylène de densité moyenne (MDPE) qui renferme les organes de renforcement (38) et les fils de renforcement radial (36) finit la structure du câble. Le polyéthylène de densité moyenne dont est constituée la chemise (42) peut être rempli de poudre de noir de carbone.
PCT/US1996/000974 1995-01-24 1996-01-24 Gaines intermediaires en copolymere de polypropylene-polyethylene pour cables a fibres optiques et leur procede de fabrication WO1996023239A2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US08/716,445 US5761362A (en) 1995-01-24 1996-01-24 Polypropylene-polyethylene copolymer buffer tubes for optical fiber cables and method for making the same
DE69614951T DE69614951T2 (de) 1995-01-24 1996-01-24 Polypropylen-polyethylene kopolymer schutzrohr für ein faseroptisches kabel und herstellungsverfahren, sowie optisches kabel mit einem solchen schutzrohr
EP96911186A EP0760108B9 (fr) 1995-01-24 1996-01-24 Tube de protection en copolymere de polypropylene- polyethylene pour cable a fibres optiques, procede de fabrication d'un tel tube, et cable optique equipe d'un tel tube

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/377,366 1995-01-24
US08/377,366 US5574816A (en) 1995-01-24 1995-01-24 Polypropylene-polyethylene copolymer buffer tubes for optical fiber cables and method for making the same

Publications (2)

Publication Number Publication Date
WO1996023239A2 WO1996023239A2 (fr) 1996-08-01
WO1996023239A3 true WO1996023239A3 (fr) 1996-09-26

Family

ID=23488828

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1996/000974 WO1996023239A2 (fr) 1995-01-24 1996-01-24 Gaines intermediaires en copolymere de polypropylene-polyethylene pour cables a fibres optiques et leur procede de fabrication

Country Status (6)

Country Link
US (2) US5574816A (fr)
EP (2) EP0760108B9 (fr)
CN (1) CN1185516C (fr)
DE (1) DE69614951T2 (fr)
ES (1) ES2162046T3 (fr)
WO (1) WO1996023239A2 (fr)

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US5574816A (en) 1996-11-12
WO1996023239A2 (fr) 1996-08-01
EP0760108B1 (fr) 2001-09-05
CN1185516C (zh) 2005-01-19
DE69614951D1 (de) 2001-10-11
EP0760108B9 (fr) 2002-04-10
ES2162046T3 (es) 2001-12-16
EP0760108A1 (fr) 1997-03-05
US5761362A (en) 1998-06-02
EP1063550A1 (fr) 2000-12-27
CN1150482A (zh) 1997-05-21
DE69614951T2 (de) 2002-04-11

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